FLY-CATCHING WASPS 



99 



Loew. [F. Knab]. All which we took from the nests or 

 from the wasps in transit were dead. 



The following week we again visited Creve Coeur Lake 

 and further studied the contour and contents of the bur- 

 rows. It was strange that, in one mass of homogeneous ma- 

 terial like a sand-bank, with no roots, stones or other 



FIG. 25. The burrows of Paranothyreus cingulatis. 

 natural size. 



One-fourth 



